MD Settings: validate home button url input

chrome/browser/resources/settings/appearance_page/appearance_browser_proxy.js

Index: chrome/browser/resources/settings/appearance_page/appearance_browser_proxy.js
diff --git a/chrome/browser/resources/settings/appearance_page/appearance_browser_proxy.js b/chrome/browser/resources/settings/appearance_page/appearance_browser_proxy.js
index b139a7f1494d8067d4e5b4245034d6308fa28ff1..034e642c0d50585f69509ddbd5f8eb5e4636cd52 100644
--- a/chrome/browser/resources/settings/appearance_page/appearance_browser_proxy.js
+++ b/chrome/browser/resources/settings/appearance_page/appearance_browser_proxy.js
@@ -19,15 +19,21 @@ cr.define('settings', function() {
     /** @return {boolean} Whether the current profile is supervised. */
     isSupervised: assertNotReached,
 
-// <if expr="chromeos">
+    // <if expr="chromeos">
     openWallpaperManager: assertNotReached,
-// </if>
+    // </if>
 
     useDefaultTheme: assertNotReached,
 
-// <if expr="is_linux and not chromeos">
+    // <if expr="is_linux and not chromeos">
     useSystemTheme: assertNotReached,
-// </if>
+    // </if>
+
+    /**
+     * @param {string} url The url of which to check validity.
+     * @return {!Promise<boolean>}
+     */
+    validateStartupPage: assertNotReached

[dpapad, 2017/03/24 21:47:43]

Nit (optional): It's OK to add a trailing comma here.

[scottchen, 2017/03/24 22:56:31]

Done.

   };
 
   /**
@@ -58,24 +64,29 @@ cr.define('settings', function() {
       return loadTimeData.getBoolean('isSupervised');
     },
 
-// <if expr="chromeos">
+    // <if expr="chromeos">
     /** @override */
     openWallpaperManager: function() {
       chrome.send('openWallpaperManager');
     },
-// </if>
+    // </if>
 
     /** @override */
     useDefaultTheme: function() {
       chrome.send('useDefaultTheme');
     },
 
-// <if expr="is_linux and not chromeos">
+    // <if expr="is_linux and not chromeos">
     /** @override */
     useSystemTheme: function() {
       chrome.send('useSystemTheme');
     },
-// </if>
+    // </if>
+
+    /** @override */
+    validateStartupPage: function(url) {
+      return cr.sendWithPromise('validateStartupPage', url);
+    },
   };
 
   return {